Gas-heater.



(. E. SHARPE.

GAS HEATER.

APPLICATION msn MAR. 31. 1911.

F Il 0% 15J [1611 1511 410Mo /10 5b f7 n G. E. SHARPE.

GAS HEATER.

APPLICATION FILED MAR. 31. 19H.

Patented NOV. 19, 1918.

2 sdETs-SHEET `2.

HIIIHIHLW cnr i SATB@ GAS-HEATER.

spammen @fretten Patent.

Patented Nov. 19, .1918.

Application filed March 31, 1917. Serial No. 158,938.

, To all whom it may concern:

Bc it known that I, GEORGE E. SI-I'Anrn, a citizen of the United States, residing at Steubenville, in the county of Jelferson'and State of Ohio, have invented certain new and useful Improvements in Gas-Heaters, of which the following is a specification.

My present invention relates to new and useful improvements in gas heaters and has for its primary object an arrangement of draft regulating members in `conjunction with a plurality of Bunsen burners so that all striking back of the `flames into the burner tubes is prevented, doing away with the necessity of using baffle coverings for the ends of such tubes.

ln this connection7 a still further object of my invention is to so .arrange the draft governing means that all circulation of ail abouithe lower portions of the burners, save for a direct vblast of air upwardly lthrough the burner tubes, is prevented.

Another object .which lhave in view is a means for adjustably mounting the `burner tubes ywith respect to the burner jet pipe so that each burner may be independently adjusted-to insure a most efficient consumption of fuel.

With these and other objects in view, my

invention will be more fully described, illustrated in the accompanying drawings, and

then specifically pointed out in the claims which are attached to and form a part of this application.

In the drawings:

Figure 1 is a front elevation of a conventional form of wall or bathroom heater constructed in accordance with lmy invention' Fig. 2 is a horizontal sectional viewftaken on the line 2'-Q of Fig. l, looking in the direction of the arrows;

Fig. 3 is a central vertical sectional view;

Fig. 4 is a fragmentary sectional view taken through a fuel conducting 'burner bracket;

Fig. 5 is an unassembled perspective view of the burner mechanism proper;

Fig. 6 is a sectional View correspondingv to Fig. 3, illustrating my .invention applied to a fireplace heater;

Fig. 7 is a fragmentary vsectional view,

.having a back wall 11, side walls 12, top

wall 13A and bottom wall 14, all of these Walls being covered, both inside and out, with asbestos paper 15 0r other suitable fire- `proofing material. The top, bottomand side walls, at their edges, have outwardly directed flanges 16 adapted to engage against the outer face of the wall of a room when `the casing is seated in a properly formed ,opening t erein.

Mounted within this casing is the vcombustion chamber proper, indicated as a whole by the numeral 17, and including a back wall 18 of suitable sheet metal, spaced somewhat at its lower end from the bottom wall of the outer casing 10 and extending upwardly and forwardly, being curved, as best shown in Fig. 3, so that its free upper end projects horizontally in advance of the attaching flanges 16 of the casing. The side walls 19, at their rear edges, are formed with inwardly directed flanges 2O which seat the side edges of the back wall 18 and at their outer edges have outwardly directed ilanges 21 which rest against the outer faces 'of the side flanges 16 of `the main casing. The back and side walls of the combustion chamber 17 are provided with an interior lining 22 of asbestos paper or like material and refleeting side walls 23, of suitable ornamental sheet metal, such as copper, extend over the inner faces of the side walls 19 and at their outer edges have outwardly directed flanges 24 engaging over the flanges 21.'

A face plate 25, in the form 0f a rectangu- ,lar open frame, engages at its edges against the various overlapping flanges previously described and is formed with openings to receive bolts 26 which are passed through the overlapping flanges and secured by nuts 27 so that the face plate, combustion cham ber and main casing are all secured in proper relative position. The edges of this faceA plate preferably have shallow rearwardly directed centering flanges 28- which engage against the free edges of the flanges of the combustion chamber and main casing to ad` ditionally hold the parts against any lateral movement. The face plate also at its corners has additional openings to receive screws 29 or other fastening devices which pass into .the wallV of the room -tos'upporti the heater.

vided with a downwardly and forwardly dirrected perforate hood portion 3l which serves to deflect burnt gases forwardly and downwardly into the room and which is provided with a rearwardly projecting supporting ange 32 at its lower edge which seats and supports the upper forwardv edge of the back plate 18. rlhe lower portion of the face plate is open, save for a transverse brace member 33 substantially L-shaped in cross section, as shown in Fig. 3, and a removable base plate 34 which, at its upperA edge, is secured to the brace 33 by bolts' 35 and nuts 36. The bolts 35 also pass through a depending flange on the forward edge of a lower deflecting plate 37 which forms the bottom wall of the combustion chamber and which is supported-by these bolts and braced at its rear portion by the burner tubes, as Y will be later explained. As a means for additionally supporting the face plate, which is preferably in the form of a relatively heavy metallic casting, the lower porf tion of the face plate is provided with one or more rearwardly projecting ears 38 which seat upon the upper face of the bottom wall 1 14 of the casing, as clearly shown in Figs. 2 and 3 of the drawings.

.Substantially L-shaped burner supporting l brackets 39 and 40 each have one arm eX- tending in spaced relation to the bottoni of the casing at each side and their other arm extending upwardly against the. back wall 1 8 of the combustion chamber. Bolts 41 pass through these upwardly directed arms and through the back wall and, secured bynuts 42, hold the brackets in place. 'The horizonj tal arms of these brackets, at their inner ends, are thickened to provide internally threaded bosses 43 into which are threaded the ends of a burner jet pipe 44, in a manner shown in Fig. 5. zontal arm of the bracket 40 is also provided with a second threaded boss 45 which is directed inwardly and such bracket has its horizontal arm cored to provide a passage The free end of the hori.

4G opening at oneend through the boss and at its other end through the boss 43. A pipe section 47 is threaded at one end into the boss 45 and at its other end carries a valve 48 ofthe turn plug type, having a valve stem 49 to which is detachably secured an extension stem 50 which projects through an opening formed in the central portion of thefp'la-te34 and is provided with a handle 5l. A fuel supply pipe 52 communicates with the valve and passage of gas to the valve proper is governed by an adjusting screw 53 which may be turned to more or less restrict the passage through the valve casing.

rlhe upper faces of the horizontall arms of the brackets 39 and 40 are finished off to providel snug seats 54 for the cut-away end portions 55 of a burner plate 56 which is L- shaped in cross section and which is supported by the brackets in such a manner that the rear edge of its horizontal wall en` gages against the forward face of the back wall of the combustion chamber, while the free edge of its opposite wall extends downwardly andsligh'tly forwardly, as shown in Fig. 3, to a point about at the mid level of the jet pipe 44. This burner plate is supported at such an elevation that the lower edgeof its front wall and the lower edge of the back wall or plate of the combustion,chamber/are substantially on a level so that Vthe two Tprovide bailes which will prevent setting up of any transverse or longitudinal aircurrents above the jet pipe during passage of air through the lower portion ofthe face plate and beneath the lower endvof the back wall18. f .j

The jet pipe 44 is provided at suitable intervals throughout its length and in its upper face with reduced fuel passages or openings '57 and the burner plate 56, in vertical alinement with these openings, is formed with threaded openings 58 to adjustably receive the lower ends of burner tubes 59. rlhese burner tubes have their lower ends threaded for a considerable distance so that they may be readily adjustedy toward andaway from the jet pipeto space their open lower ends to a more or less distance from the openings 57. The upper ends of the jet tube extend slightly above the bottom edge of the back wall 18 and part of thisl air is,.of course, drawn directly up through the burner tubes 59 to miX with the gas escaping from the jet tube and so provide a proper combustible mixture for an eliicient blast fiame. At the same time, the depending flange of the burner plate, together with the lower end of the back wall or plate 16, prevent any transverse currents of air from being set up between the jet pipe and the lower ends of the burner tubes so that a steady and uniform discharge of mixed air and gas through the burner tubes is assured and all striking back of the flame through the burner tubes is prevented. Because of this, no baffle coverings at the upper ends of the burner tubes or like devices are necessary and the burner tubes are kept free of carbon. The flame from the burner tubes impinges against the forward face of the back wall or plate 18, which is covered with asbestos, and the heat from this flame is directed forwardly by the curved upper portion of the back wall and so out into the room. Thisv back plate becomes highly heated and, consequently, heats all the air between it and the main casing 10 so that this air is discharged in a highly heated condition through the openings in the sides and hood portion of the face plate, a constant circulation of air through the space between the casing and combustion chamber being thus maintained, air being drawn in at the bottom through the face plate, highly heated in this space and discharged at the sides and top of the face plate.

In Fig. 6 of the drawings, I have illustrated the manner of applying my burner structure to a heater 60 of the replace type in which the body or casing in itself forms the combustion chamber, consisting merely of side walls 61, a top wall 6.2 and a back wall 63, the latter having its upper portion inclined forwardly, as shown, and an ornamental face plate 64: being secured to the edges of the walls to present a neat appearance about the heater when it is positioned within the wall of a room. With this form of construdtion, the jet pipe supporting brackets are secured directly to the back wall 63 of the casing and the burner plate 56 engages at its rear edge against such wall so that the back wall of the casing and depending wall of the burner plate shut 01T cross drafts about the jet pipe, in the manner previously described.

Obviously, this form of burner and burner plate may be employed with practically all types of gas heaters and in gas logs. In some instances, where a heater is so constructed that there is no wall adjacent the jet pipe, I employ a modified form of burner plate, such as that shown at 65 in Fig. 7, which is U-shapedin cross section, having depending side wall portions which project in spaced relation at either side of the jet pi c to prevent setting up of cross currents o air.

Although I have illustrated and described my invention in all its details of construction, it will of course be understood that I do not wish to limit myself to such details, but reserve the right to make any changes, within the scope of the appended claims, without in the slightest degree departing from the spirit of my invention.

Having thus described the invention, what is claimed as new is:

1. i gas heater comprising a casing, a deflector wall mounted within the casing and spaced from .the rear portion thereof to form an air chamber, the lower end of the deflector Wall being spaced above the bottom `of the casing whereby air entering at the lower portion of the front of the casing may pass transversely across the bottom of the said casing into the air chamber and thence out through the upper portion of the front ofthe casing above the deflector wall, a jet pipe disposed in spaced relation to the defleotor wall with its upper portion slightly above the lower edge of said wall, its upper portion being formed with fuel outlet openings, a burner plate supported in spaced relation above the jet pipe and engaging at its rear edge against the defector wall, a flange depending at the forward end of the burner plate and projecting to substantially the level of the lower edge of the detiector wall and spaced in advance of the jet pipe, and independent burner tubes adjustably mounted for vertical vmovement on the burner plate in alinement with the openings of the jet pipe and having their lower ends independent of and normally spaced from said jet pipe.

2. A gas heater comprising a casing, a deflector wall mounted within the casing and spaced from the rear thereof to form an air chamber, there being an opening formed in the lower portion of the front of the casing to permit the passage of air from the front of the casing transversely across the bottom thereof and into the air chamber, a jet pipe disposed within the lower portion of the casing, the jet pipe being formed in its upper face with spaced openings, a plurality of burner tubes supported vertically in alinement with the openings, and a burner plate through which the burner tubes project engaging at its rear edge against the deflector wall and provided at its opposite edge with a depending flange spaced from the burner tube and terminating substantially level with the lower edge of the defleeting wall.

3. A gas heater comprising a casing, a deflect-ing wall disposed within the casing and spaced from the rear thereof to form an air chamber, there being an opening formed in the front of the casing at the lower portion thereof to permit the passage of air frointhe front of the casing transversely across the bottom thereof and into the air chamber, a pair of substantially L-shaped'brackets supported by one arm at the lower portion of the defiector Wall, a jet pipe having its ends engaging inthe brackets and formed in its upper face with openings, a supply pipe engaging at one end in one of the brackets, said bracket beiner cored to establish communication between tile supply pipe and jet ipe, seats formed upon the upper faces of the free arms of the brackets, a burner plate of substantially L-shaped cross-section formation detachably secured to said seats and engaging at its rear edge against the deflector wall and having its other edge depending in advance of the jet pipe and terminating substantially flush with the lower edge of the deector wall,

and a plurality of burner tubes projecting through the burner plate in alinement with the openings of said jet pipe.

4t. A gas heater including a easing having a defiector wall and provided with means for permitting the passage of a current of air transversely across the bottom of the casing from the front thereof to the devvlector wall, a jet pipe disposed within the In testimony whereof l aihx my signature.

GEORGE E. SHARPE. [L. 5.]

Copies of this patent may be obtained for ve cents each, by addressing thelCommissioner of Patents,

Washington. D. C. 

